Two tools with basic schemas and descriptions, but significant gaps in parameter documentation and output schema clarity. search-clinical-trials has 5 parameters with descriptions, but lacks enums for constrained values (recruitment status, country). get-trial-details is minimal (1 param). Neither tool documents output schema structure. Descriptions are adequate (60-80 chars) but lack actionable context for LLM selection. No error handling guidance, no pagination support despite search tool returning multiple results. Parameter descriptions lack format constraints and valid value ranges.

• Add output schema documentation to both tools. For search-clinical-trials, document: { trials: [{ id, title, status, country, recruitmentStatus, enrollmentTarget }], totalCount, nextCursor }. For get-trial-details, document all returned fields (phases, interventions, contacts, etc.).
• Add pagination to search-clinical-trials: add 'limit' (1-100, default 20) and 'offset' (default 0) parameters. Return totalCount in response so LLM knows if more results exist.
• Convert 'recruitment' parameter to enum: ['recruiting', 'not-recruiting', 'completed', 'suspended', 'terminated']. Add 'country' as enum or document valid ISO 3166-1 alpha-2 codes.
• Enhance parameter descriptions with constraints: 'maxResults: integer, 1-100, default 20' and 'trialId: string matching pattern NCT\d{8} (e.g., NCT04368728)'.
• Add error handling guidance to descriptions: 'If no trials found, try searching by broader condition or remove country filter. If trial ID invalid, call search-clinical-trials first to find the correct ID.'